Because osmotic pressure is basically given by this basic idea here.
因为渗透压，就是由这个概念得到的。
And after osmotic pressure, you'll be done with thermo.
学完渗透压之后，你们就把热力学学完了。
One of them is osmotic pressure.
其中之一是渗透压。
So you can build up some high pressure, what's called osmotic pressure.
所以你能逐步积累起较高的压强，那就叫做渗透压。
So what's the osmotic pressure of the solution.
那么溶液的渗透压是多少。
Balance when the pressure difference is equal to the osmotic pressure.
平衡时，膜两侧压力差等于渗透压。
Balance when the pressure difference is equal to the osmotic pressure.
平衡时，膜两侧压力差等于渗透压。
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